Standard Blu-rays often use 8-bit depth. By moving to 10-bit, the video can display over a billion colours compared to the 16.7 million in 8-bit. This virtually eliminates "banding" in the dark voids of space or the subtle gradients of the Scarif sunset.
For over a decade, x264 was the standard. It is efficient, widely compatible, and produces good quality. However, to store a full 1080p BluRay (which is 25-40 Mbps), a raw x264 file would still be 20-30 GB. -CM- Rogue.One.2016.1080p.BluRay.x265.10bit.SDR...
The technical tags in your file provide a roadmap of its quality and origin: Standard Blu-rays often use 8-bit depth
: After principal photography finished, Disney was reportedly unsatisfied with director Gareth Edwards' first cut. They brought in writer/director Tony Gilroy to "save" the film, paying him millions of dollars to oversee extensive reshoots—roughly 40% of the movie—just months before the premiere. For over a decade, x264 was the standard